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Dissertations / Theses on the topic 'Physical Properties of Molybdenum Dioxide'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Sutherland, S. "Characterisation and properties of lead dioxide electrode material." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354224.

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2

Al, Ghafri Saif. "Phase behaviour and physical properties of reservoir fluids under addition of carbon dioxide." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/19007.

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The phase behaviour of reservoir fluids under the addition of carbon dioxide (CO2) were studied at elevated pressures and temperatures similar to those encountered in enhanced oil recovery (EOR) and carbon storage processes. The principal focus of the work presented in this thesis is the experimental investigation of the phase behaviour of these CO2 mixtures with hydrocarbon reservoir fluids. For this purpose, a new high-pressure high-temperature apparatus was designed and constructed. The apparatus consisted of a thermostated variable-volume view cell driven by a computer-controlled servo mot

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3

Wang, Junwei. "Chemical doping of metal oxide nanomaterials and characterization of their physical-chemical properties." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1333829935.

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4

Simo, Aline. "Physical properties of vanadium dioxide nanoparticles: application as 1-d nanobelts room temperature for hydrogen gas sensing." Thesis, University of the Western Cape, 2013. http://hdl.handle.net/11394/4581.

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Philosophiae Doctor - PhD<br>Transition metal oxides magneli phases present crystallographic shear structure which is of great interest in multiple applications because of their wide range of valence, which is exhibited by the transition metals. The latter affect chemical and physical properties of the oxides. Amongst them we have nanostructures VO2 system of V and O components which are studied including chemical and physical reactions based on non-equilibrium thermodynamics. Due to their structural classes of corundum, rocksalt, wurtzite, spinel, perovskite, rutile, and layer structure, thes

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5

Yanikian, Cristiane Rumi Fujiwara 1982. "Influência da utilização de nanopartículas de dióxido de silício ou polissiloxano acrilado nas propriedades físicas de materiais resinosos = Influence of silicon dioxide or acrylated polisiloxane on resin-based materials physical properties." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/289696.

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Orientador: Luis Roberto Marcondes Martins<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-26T19:03:50Z (GMT). No. of bitstreams: 1 Yanikian_CristianeRumiFujiwara_M.pdf: 6915738 bytes, checksum: 63867fbe5eef071b9c6effe63971fba8 (MD5) Previous issue date: 2015<br>Resumo: A utilização de resinas compostas restauradoras cresceu consideravelmente nos últimos anos, porém, a alteração de cor associado à degradação da resina composta ainda é um importante fator para sua substituição. Portanto, o objetivo do

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6

Barreiro, Fidalgo Alexandre. "Experimental studies of radiation-induced dissolution of UO2 : The effect of intrinsic solid phase properties and external factors." Doctoral thesis, KTH, Tillämpad fysikalisk kemi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-205605.

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Dissolution of the UO2 matrix is one of the potential routes for radionuclide release in a future deep geological repository for spent nuclear fuel. This doctoral thesis focuses on interfacial reactions of relevance in radiation-induced dissolution of UO2 and is divided in two parts: In the first part, we sought to explore the effects of solid phase composition: The impact of surface stoichiometry on the reactivity of UO2 towards aqueous radiolytic oxidants was studied. H2O2 reacts substantially faster with stoichiometric UO2 than with hyperstoichiometric UO2. In addition, the release of urani

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7

Valle, Ana Caroline Margarido. "Influência da adição de dióxido de titânio (TiO2) nas propriedades físico-mecânicas de painéis MDP." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-26072018-151544/.

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A utilização de nanomateriais na produção de painéis de madeira se apresenta como uma inovação, pois uma revolução vem acontecendo na ciência e tecnologia desde o entendimento que os materiais em escala nanométrica podem apresentar novos comportamentos e/ou propriedades diferentes daquelas que geralmente apresentam em escala macroscópica. O presente projeto teve como objetivo a produção de painéis particulados de madeira de Eucalyptus grandis com adição em diferentes porcentagens de nanopartículas de dióxido de titânio (TiO2) e dióxido de titânio em pó e avaliação das suas propriedades físicas

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8

Okolo, Gregori Nworah. "The effects of chemical and physical properties of chars derived from inertinite–rich, high ash coals on gasification reaction kinetics / Gregory Nworah Okolo." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4890.

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With the increasing global energy demand and the decreasing availability of good quality coals, a better understanding of the important properties that control the behaviour of low–grade coals and the subsequent chars in various utilisation processes, becomes pertinent. An investigation was therefore undertaken, to study the effects of chemical and physical properties imparted on chars during pyrolysis on the subsequent gasification reaction kinetics of typical South African inertinite–rich, high ash Highveld coals. An attempt was made at following these changes in the transition from coals to

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9

Kim, Kilyoung. "Super Collision Energy Transfer Studies in Single Collisions Between Vibrationally Hot Benzene Like Molecules and Ground State Bath Molecules: The Effect of Physical Properties of Donor and Bath Molecules on Super Collision Energy Transfer." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2497.

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This research is focused on single-collision energy transfer events between highly vibrationally excited benzene-like donor molecules and small bath molecules, CO2 and N2O in the vibrational ground level. Measuring how much energy is transferred from donors to bath molecules was accomplished by probing bath molecules scattered into specific-rotational states using a tunable Δv=0.0003 cm-1 solid state diode laser. The normalized energy transfer probability distribution function, P(E,E'), determined from energy gain information, is very useful in comparing collisional energy transfer efficiency

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10

Silveira, Atilio Coutinho. "Fabricação e avaliação da maturação de queijo prato obtido a partir de leite pre-acidificado com CO2 e redução de coagulante." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255180.

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Orientador: Mirna Lucia Gigante<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-13T15:20:44Z (GMT). No. of bitstreams: 1 Silveira_AtilioCoutinho_M.pdf: 503770 bytes, checksum: 540f2feaadf6c5c1a64a84c5acd8f42a (MD5) Previous issue date: 2009<br>Resumo: O objetivo geral deste trabalho foi avaliar o efeito da pré-acidificação do leite e da redução da dosagem de coagulante na fabricação e maturação do queijo Prato. Inicialmente, para definir a porcentagem de redução de coagulante a ser adotada, avaliou-se

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11

REGO, MARIA E. de M. "Gestão dos rejeitos radioativos gerados na produção de 99Mo por fissão nuclear." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10584.

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Made available in DSpace on 2014-10-09T12:42:15Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:05:29Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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12

Almantariotis, Dimitrios. "Captage du dioxyde de carbone par des liquides ioniques partiellement fluorés." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00671346.

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L'objectif de ce travail est d'étudier et de contribuer à améliorer la capacité des liquides ioniques pour l'absorption sélective de dioxyde de carbone. Pour cela nous avons envisagé la fluorination partielle des cations ou des anions constituant les liquides ioniques. Nous avons sélectionné des liquides ioniques partiellement fluorés à étudier, dont trois ont été synthétisés dans ce travail. Dans un premier temps, nous avons étudié l'impact de la structure des liquides ioniques purs sur leurs propriétés thermophysiques telles que la masse volumique, la viscosité et la stabilité thermique. Dan

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13

BENAISSA, MOHAMMED. "Etude par spectroscopie infrarouge des proprietes superficielles de l'alumine et des alumines sodees ou fluorees : acidite et basicite." Caen, 1985. http://www.theses.fr/1985CAEN2013.

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Etude des groupes superficiels de l'alumine et des cites d'adsorption. Etude de l'adsorption des alcools sur l'alumine degussa c, des sites d'adsorption et de l'acidite induite. Donnees, enfin, sur les alumines modifiees par des ions na+ ou f-

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14

Chou, Tien-Pao, and 周天寶. "Study of the Properties of the Molybdenum dioxide Films by Magnetron Sputtering." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3pf245.

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碩士<br>義守大學<br>材料科學與工程學系<br>105<br>In this study, we prepared Molybdenum dioxide thin films on glass substrate and silicon substrate by RF magnetron sputtering method with added in different oxide content (unadded, 5 sccm, 10 sccm, 15 sccm, 20 sccm). The effect of oxide content and different annealing temperature on the microstructure and electrical of Molybdenum dioxide thin films will be investigated in this study. The surface microstructure is observed by FESEM (Hitachi S-4700). The crystal structure is analyzed by XRD (PANalytical X’Pert PRO) The electrical is tested by Hall effect measurem

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15

Sousa, Pedro Miguel Fortunas Dias 1975. "Chromium dioxide-low temperature thin film growth, structural and physical properties." Doctoral thesis, 2008. http://hdl.handle.net/10451/1562.

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Tese de doutoramento em Física, apresentada à Universidade de Lisboa através da Faculdade de Ciências, 2008<br>Magnetic materials exhibiting a high degree of spin polarization are being actively investigated for their potential use in spintronic devices. Among them, CrO2 is very attractive because it is a half-metal fully spin polarized at the Fermi level with a magnetic moment of 2 µB/f.u. and Curie temperature well above room temperature (RT). Therefore, much effort has been put into developing efficient and controlled methods for preparing CrO2 films which nevertherless has been a difficult

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16

"Structure and properties of the anatase polymorph of titanium dioxide." Tulane University, 2003.

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The anatase form of titanium dioxide has been shown to be of technological importance. Little is known of the surface structure and the electronic structure of the anatase polymorph due to the unavailability of suitable samples. Recent studies within our group have shown that the mineral form of anatase may be amenable to surface studies. This dissertation focuses on the study of the surface and electronic properties of the anatase polymorph of titanium dioxide. Presented here are surface studies on the most stable faces of anatase, chemical surface interactions, and electronic studies for the

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17

李秉哲. "Properties of Physical Foaming on Polymer Plastics using Supercritical Fluid Carbon Dioxide." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/4aqz93.

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18

Chang, Chun-Ming, and 張峻銘. "Physical Characterization and Electrical Properties of Sol-Gel-Derived Zirconium Dioxide Films." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/64680636689981223005.

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碩士<br>國立交通大學<br>奈米科技研究所<br>93<br>According to International Technology Roadmap for Semiconductor, the high-k dielectric materials will be excellent candidates for future ultra-large-scale-integration (ULSI) application. To meet the above requirements and exhibit a low leakage and a good reliability, the replacements of high dielectric constant materials for the silicon dioxide and additional treatment have become indispensable. Traditional high-k thin films have been prepared by atomic layer deposition (ALD) and physical vapor deposition (PVD). But those methods have involved several proble

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19

Weng, Wen Yu, and 翁玟玉. "Physical Characterization and Electrical Properties of Sol-gel-derived Zirconium Dioxide Films." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/75581250790913409073.

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碩士<br>長庚大學<br>化工與材料工程學系<br>99<br>In this thesis research, zirconium oxide (ZrO2) thin films were prepared by sol-gel method and the effects of the type of annealing heat treatment (conventional furnace annealing (CFA) and rapid thermal annealing (RTA)) employed and the post-annealing atmosphere (N2, O2 or N2O) on the electrical and physical properties of the sol-gel derived ZrO2 thin films were investigated. In addition, the effect of crystal structure on the leakage current and the capacitance of the capacitors with sol-gel derived ZrO2 thin film dielectric layers was also investigated. F

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20

Yeh, Pei-I., and 葉佩宜. "The Physical and Dyeing Properties of Polypropylene/Polyester Blends Adding Nano Silica Dioxide." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/35674598662899029509.

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碩士<br>逢甲大學<br>紡織工程所<br>96<br>The purpose of this study is to improve the dyeing property of the polypropylene. Polypropylene and polyester were mixed at different weight ratios by brabender. PPgMA was used as the compatibilizer, and it intensified the interfacial interaction between PP/PET. Adding nano-SiO2 to PP/PET forms PP/PET/SiO2 nano-blends. Using different weight ratios of polypropylene, polyester and nano-SiO2 affected dyeing property of nano-blends. The parameters of operating conditions in the experiment were: the temperature of blending 265℃, rotational speed 50 rpm, time 8 minutes

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21

Liu, Jia-hau, and 劉家豪. "The Physical and Dyeing Properties of Polypropylene/Polyester Blends Adding Nano Silica Dioxide." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/38982351841334529001.

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碩士<br>逢甲大學<br>纖維與複合材料學系<br>99<br>The purpose of this plan is to improve the dyeing property of the polypropylene. Polypropylene and polyester were mixed at different weight ratios by mixer. PP-g-MA was used as the toughening agent, and it intensified the interfacial interaction between PP/PET. Adding nano-SiO2 to PP/PET, it formed PP/PET/SiO2 nano-blends. Using different weight ratios of polypropylene, polyester and nano-SiO2 affected dyeing property of nano-blends and spun into fiber by melt spinning. The dyeing property of PP/PET/SiO2 was discussed. The modified polypropylene was observed f

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22

YEH, JUN-LONG, and 葉俊龍. "The Effect of silicon dioxide filler on Physical Properties of NBR/Carbon Black." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/h3zeb8.

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碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>105<br>Nitrile rubber (NBR) has a high polarity, wear resistance, acid, alkali, heat resistance, strong adhesion. However, the most prominent feature of nitrile rubber is its excellent oil resistance, widely used in the system of various oil-resistant rubber products, oil washers, gaskets, casing, flexible packaging, soft hose, printing and dyeing roller, cable plastic materials, , Oil, copy and other industries to become essential elastic material. Carbon black for the multi-function of the strengthening material, widely used in rubber materials, the formation of

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23

Li, Chun-wei, and 李俊緯. "The Physical and Dyeing Properties of Polypropylene Modified with Polyester and Nano Silica Dioxide." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12455664746790001331.

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碩士<br>逢甲大學<br>紡織工程所<br>97<br>The purpose of this study is to improve the dyeability of the polypropylene fiber. Polypropylene and polyester were mixed at difference weight ratios by melt spinning into fiber, and the PP-g-MA was added as the compatibilizer, it imporved the compatibility to PP/PET. The addition of nano-SiO2 in spinning process formed a PP/PET/SiO2 composite fiber. The parameter of operating in the experiment is: the temperature of spinning 280℃, and rotational speed of 18 rpm. The dyeing property of PP/PET and PP/PET/SiO2 was discussed. The modified polypropylene was observed fr

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24

Maphala, Tshifhiwa. "Effects of carbon dioxide storage in coal on the physical and chemical properties of coal." Thesis, 2013. http://hdl.handle.net/10539/12826.

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Unlike other carbon dioxide (CO2) storage options, CO2 storage in coal seams is still in its infancy, and one of the many questions that need to be answered concerns the long term effects of storing CO2 in coal specifically on the structure and properties of the coal. Most studies on coal structural changes due to CO2 adsorption have been done over the period of adsorption (hours or 2-3 days), and mostly at low pressures which are not representative of actual storage conditions. The aim of this study is to determine chemical and physical changes that might occur due to long term interaction of

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25

Seshu, Bhamidipati. "Changes in some of the physical and chemical properties of Amorphous Fe68Ni14Si2B16 alloy due to molybdenum substitution for Ni." Thesis, 1998. http://hdl.handle.net/2009/942.

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26

Lee, Wen Jenq, and 李文正. "Physical Properties o blended alkanolamines (DEA+MDEA, DEA+AMP); density,viscosity,and solubility and diffusivity off carbon dioxide and nitrous oxide in blended alkanolamines." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/75229482527018822415.

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27

Mukri, Bhaskar Devu. "Synthesis, Structure and Catalytic Properties of Pd2+, Pt2+ and Pt4+ Ion Substituted TiO2." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3346.

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After introducing fundamentals of catalysis with noble metal surfaces especially Pt metal for CO oxidation and subsequent developments on nano-crystalline Pt metals supported on oxide supports, an idea of Pt ion in reducible oxide supports acting as adsorption sites is proposed in chapter 1. Idea of red-ox cycling of an ion in an oxide matrix is presented taking Cu ion in YBa2Cu3O7 as an example. Noble metal ions in reducible oxides such as CeO2 or TiO2 acting as adsorption sites and hence a red-ox catalyst was arrived at from chemical considerations. Among several reducible oxide supports, Ti

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28

Mukri, Bhaskar Devu. "Synthesis, Structure and Catalytic Properties of Pd2+, Pt2+ and Pt4+ Ion Substituted TiO2." Thesis, 2013. http://etd.iisc.ernet.in/2005/3346.

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After introducing fundamentals of catalysis with noble metal surfaces especially Pt metal for CO oxidation and subsequent developments on nano-crystalline Pt metals supported on oxide supports, an idea of Pt ion in reducible oxide supports acting as adsorption sites is proposed in chapter 1. Idea of red-ox cycling of an ion in an oxide matrix is presented taking Cu ion in YBa2Cu3O7 as an example. Noble metal ions in reducible oxides such as CeO2 or TiO2 acting as adsorption sites and hence a red-ox catalyst was arrived at from chemical considerations. Among several reducible oxide supports, Ti

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29

Prasad, Soma. "Interdiffusion Studies In Metal Silicon Systems." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2107.

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Metal silicon systems have a wide range of applications, ranging from the use in electronic industry, as superconductors, protective coatings and as high temperature structural materials. Mo- and Nb-based silicides have emerged as suitable high temperature materials and extensive studies are being conducted make it suitable for various applications. Because of very good strength to density ratio, Nb-based silicides have attracted maximum attention. This is basically a mixture of Nb solid solution and Nb5Si3 intermetallic compound. A very small amount of NbCr2 Laves phase could also be p

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30

Prasad, Soma. "Interdiffusion Studies In Metal Silicon Systems." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2107.

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Metal silicon systems have a wide range of applications, ranging from the use in electronic industry, as superconductors, protective coatings and as high temperature structural materials. Mo- and Nb-based silicides have emerged as suitable high temperature materials and extensive studies are being conducted make it suitable for various applications. Because of very good strength to density ratio, Nb-based silicides have attracted maximum attention. This is basically a mixture of Nb solid solution and Nb5Si3 intermetallic compound. A very small amount of NbCr2 Laves phase could also be present

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